MOOSE RACING Fuel Mixture Screw by Zip-Ty - Orange FMS01-OR7075 T 7 aluminum construction and re designed pin taper set this screw apart from the competition The inventor of the easy adjust fuel screw and Moose Racing brings you this needed accessory Adjust your carb for better off idle acceleration with just your fingers Includes O ring, washer, and heavy duty spring Fits Keihin FCR carbs on modern machines Made in the U. S. A.